var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
const bodyParser = require('body-parser')
var session = require('express-session')
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var mongoose =require('mongoose')
// 实例化app对象
var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
// 应用中间件
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
// app.use(session({
//   //  配置session解析中间件
//   secret: 'sdfdsfdasfdsafsdfsd54f45asdf5sadsada452d4asd45as4d56sa45d6asd',
//   // cookie的生命周期
//   cookie: {maxAge: 1000 * 60 * 60 * 24 * 7},
//   resave: false, // 每次请求都强行设置session-- false表示不设置
//   saveUninitialized: true  // 每次请求无论有没有session cookie 都设置新的session  true表示设置
// }))
app.use(cookieParser());
app.use('/', indexRouter);
app.use('/users', usersRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

mongoose.connect('mongodb://localhost:27017/my-boss-database', {useNewUrlParser: true})
var db = mongoose.connection
db.on('error', console.error.bind(console, '连接数据库失败'))
db.once('open', function () {
  console.log('连接数据库成功')
})



module.exports = app;
